FIELD: heat energy direct conversion into electricity for power supply to buildings in metallurgy and transport where frequency-regulated electric drives are required.
SUBSTANCE: proposed method intended for direct conversion of heat energy into three-phase electricity, for instance, to generate electrical energy by evaporation of electrons in vacuum due to heat of gases produced in fuel combustion is characterized in that phase shift, frequency, and waveform of output voltage of thermionic generator incorporating thermionic elements disposed in the form of multi-deck battery washed by coolant flowing over spiral path are specified by control pulses distinguished by amplitude whose length equals that of intervals. Thermionic elements are periodically thrown in operation by pulses; they are grouped in compliance with number of phases and connected in parallel networks within each group; even number of minimum four networks in one phase is specified, half of them being differentially connected. Part of networks of one direction are differentially connected affording connection of other part of networks.
EFFECT: enhanced effectiveness of heat conversion into adjustable-frequency three-phase power whose output voltage waveform is close to sine wave.
1 cl, 5 dwg
